Panaeolus papilionaceus var parvisporus is a little brown mushroom that grows in horse or cow dung and has black spores. The cap is up to 5 cm across, grayish brown, not hygrophanous, conic to campanulate in age. The cap margin is not adorned with remnants of the partial veil. The stem is 10 cm by 2.5 mm, fibrous and pruinose. The gills are adnexed and close, with one or two tiers of intermediate gills.

Some collections are allegedly mildly psychoactive, containing psilocybin

Psilocybin

Psilocybin is a naturally occurring psychedelic prodrug, with mind-altering effects similar to those of LSD and mescaline, after it is converted to psilocin. The effects can include altered thinking processes, perceptual distortions, an altered sense of time, and spiritual experiences, as well as...

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External links

• Mushroom Observer - Panaeolus papilionaceus var. parvisporus
• Mushroom Observer - Panaeolus papilionaceus var. parvisporus